bro isn't me

Hi, its my first time playing competitive and I just got my rank. How many wins i need to have to get gun buddy?

I'm level 15 and just got the game, and it's really frustrating when I'll get 5 games where all I can do is bend over and hope the enemies are gentle, then the next 5 games I'll go 26 and 4 without a sweat, then the matchmaking switches it...